Multiple-fuse block.



C. H. DUNPEB. MULTIPLE FUSE 'BLOCK APPLICATION FILED JUNE 12,1908.

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Patented Mar. 8, 19N.

, I ff s/IIIIIMIII G. H. DUNPEE.

MULTIPLE FUSE BLOCK,l

APPLIJ 10N FILED JUNE 12,1908.

Patented Mar. 8, 1910.

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wit/wwwa J A (L E. DUNFBE.

MULTIPLE FUSE BLOGK. V Ammonium FILED JUNI: 12,1908.

Patented Mar.'s,191o.

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UNITED srernsgrnrnnronmcn CHARLES H. DUNFEE, OF DENVER, COLORADO. ASSIGNOR. BY DIRECT ANI) MESNE ASSIGNMENTS, 'IO THE DUNFEE ELECTRIC COMPANY, A CORPORATION OF CALI- FORNIA.

MULTIPLE-F USE BLOCK.

Specicaton of Letters I'Patent. y v latgnted )Ing-1 8, gbn

Application led Iune12, 1908. Serial No. 438,235.

To all whom it may concern:

Be it known that I, CHARLES Il. DUNrnn, a citizen of the United States, residing in the city and. county ot Denverand State ot' Colorado, have invented certain new and uscul Improvements in Multiple-Fuse Blocks; and I do declare the following to be a full, clear, and exact description of the invent-ion, such as will enable others skilled in the art to which it. appertains to make and use the same, reference being had to the accompanying drawings, and to the tigures of reference marked thereon, which form a part of this specification. y

My invention relates to improvements in what I term multiple fuseblocks.

In my' improved construction I employ two'v blocks which in the particular construction shown in the drawing, are mounted to rotate synchronously. In the periphery ot' each of these blocks is formed 'a number of longitudinally disposed grooves open atthe curved surface of the block and adapted to hold 'useswhose'axes lie parallel with the axis of the block. Each block is journaled in 'a suitable stationary support, the hase ot which is recessed to permit the end contacts with which the block isprovided to move downwardly during the rotation lot the block. Within these recesses of the statiorn As shown in the drawing one journal of.

each fuse block is provided with a gear meshing with a centrally located gear operated by a ratchet and lever 4 connection whereby the two fuse blocks are simultaneously rotated in the same direction. I-'lach stroke of the lever is so gaged that at the completion of a Stroke two fuses are thrown into the circuit, ono into each branch thereof.

My improved construction may be" employed as a switch as well as a fuse block, hy simply arranging the mechanism so that two movements of the ratchet lever will he necessary to disengage two fuses and place two other fuses in the circuit. In this eventi one movement of the lever and ratchet wheel will actuate the blocks to disengage one set ot' fusesand break the circuit, while the next movement ot the lever and ratchet will bring the two new fuses into engagement with the stationary contacts, thus closing the circuit.

It will be understood that either form ot` construction may be employed, that is to say a form in which a single movement of the lever and ratchet will 'throw one set of fuses out and another set in; or a construction in which .two movements of the lever are required'one to break the circuit and the other to throw the new fuses into place. It is evident that any suitable power may he employed for rotating the'tuse blocks.

I'Iaving briefly outlined myimproved construction, I will proceed to describe the satie in detail reference being made to the accompanying drawing in which is illustrated an embodiment thereof.

In this drawing, Figure l is a'top plan View of my iiinliroved fuse block mechanism. Fig. 2 a cross section taken through the same on the line 2 2 Fig. l looking toward the right or in the direction of the arrow. Fig. 3 is a section taken through the operating shaft on the line 8 3 Fig. l looking toward the left or in thedirection of the arrow, the parts being shown on a larger scale. Fig. 4 is a longitudinal section taken through the construction cutting one ot the fuse blocks centrally', the fuses located therein, however5 being shown in elevation. Figs. 5 and (l show two forms ot fuse adapted tor use with myil'nprovcd block. Fig. 7 is a perspective lview of one ot the contacts with which my improved fuse blocks are equipped.

Fig. 8 is a detail view ot a cont-act member v detachably connected with either extremity of a fuse. Fig. 9 is la perspective view in detail oi' a stationary contact which cooperates with a contact carried by a fuse block, to close the circuit when the block is adjusted to bring the fuse into proper position. Fig. 10 is a top plan view in detail ot a Contact applied to the base of my improved construction and employed in connecting the main circuit wires or conductors with the stationary contacts located in the base of the structure beneath the rotary fuse blocks. Fig. 'l1 is an edge view of the same showing the conductors in cross section.

',lhc same reference characters indicate the same parts inl all -the views.

Let the numeral 5 designate a. stationary base which may be composed of porcelain or 4s. a ins in P l paz.

l h@ Contact 'The 75 I y :11:40 bu us 'HSQ may bv pum fuse 1s muployeu.

leaves on. lr )f A and .remiefe Wih when ih when 'this im) cumin( 1i" n tjr@ tra dimm 1 emi; in cui*IM it is muy ,1 -mation i@ eac "sa d 0 0"" tim and l ww a art;

action,

ten e( inw 'il 1S y wil nd e iff/Q y; y mi' 5 is Jcuae( the. in

until() position @rodi se t,

in im une m one @Mmm mi m to move in thesamevertical plane. As it is, however, advisable for the 4sake of comn pactness to have the two blocks in close proximity, I prefer to arrange the blades 34 on the two vblocks in different vertical planes.

I claim is: Y,

1. The combination with a base, of two fuse blocks mounted to rotate thereon and arranged in suitable proximity to each Having thus described my invention, what other, each block being provided with a number of longitudinally arranged grooves adapted to receive fuses, the opposite eX- tremities of the .grooves being equipped with contacts, fuses located in these grooves Aand connected with the contacts, stationar contacts mounted on the base adjacent eac fuse block and adapted to be engaged by each pair of contacts mounted on the corresponding fuse block, and suitable means lfor synchronously actuating the two fuse blocks, substantially as described.

2. The combination with a pairv of cylin circuit, substantially as drical fuse blocks arranged in suitable proX-v 25 'imity and adapted to rotate, each fuse block'.l

being equipped with a number of fuses, an. electrical circuit, means for synchronously rotating the two blocks, and means whereby correspondingly located fuses upon the two 30,v

blocks are simultaneously thrown into the escribed. L I 3. The combination with an electrical circuit, of a fuse block mechanism comprising a pair of cylindrical fuse blocks mounted 35` `in presence o two witnesses.

CHARLES H. DUNFEE. y Witnesses:

A. J OBRIEN, DENA NELsLI. 

